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19-5215; Rev 10/12
FEATURES
Incorporates Industry-Standard DS1287 PC
Clock plus Enhanced Features Such as Y2K
Compliant
+3V or +5V Operation
64-Bit Silicon Serial Number
Power-Control Circuitry Supports System
Power-On from Date/Time Alarm or Key
Closure
32kHz Output for Power Management
Crystal-Select Bit Allows RTC to Operate with
6pF or 12.5pF Crystal
SMI Recovery Stack
242 Bytes Battery-Backed NV RAM
Auxiliary Battery Input
RAM Clear Input
Century Register
Date Alarm Register
Compatible with Existing BIOS for Original
DS1287 Functions
Available as Chip (DS1685) or Stand-Alone
Encapsulated DIP (EDIP) with Embedded
Battery and Crystal (DS1687)
Timekeeping Algorithm Includes Leap-Year
Compensation Valid Through 2099
Underwriters Laboratory (UL) Recognized
APPLICATIONS
Embedded Systems
Utility Meters
Security Systems
Network Hubs, Bridges, and Routers
PIN CONFIGURATIONS
PLCC
AD0
AD1
AD2
AD3
AD4
AD5
RCLR
VBAT
IRQ
KS
RD
GND
WR
25
24
23
22
21
20
19
5
6
7
8
9
10
11
4
3
2
1 28 27 26
12 13 14 15 16 17 18
N.C.
X1
X2
PWR N.C. V
CC
V
BAU
X
S
Q
W
A
D6 N.C. AD7 GN
D
CS ALE N.C.
DS1685Q
PDIP (0.600″)/
SO (0.300″)/
TSSOP (0.173″)
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
VCC
SQW
VBAUX
RCLR
VBAT
IRQ
KS
RD
GND
WR
PWR
X1
X2
AD0
AD1
AD2
AD3
AD4
AD5
AD6
11
12
14
13
AD7
GND
ALE
CS
DS1685/
DS1685S/
DS1685E
EDIP (0.740″)
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
VCC
SQW
VBAUX
RCLR
N.C.
IRQ
KS
RD
N.C.
WR
PWR
N.C.
AD0
AD1
AD2
AD3
AD4
AD5
AD6
11
12
14
13
AD7
GND
ALE
CS
DS1687
TOP VIEW
DS1685/DS1687
3V/5V Real-Time Clocks
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相关代理商/技术参数
DS1685EN-5/TR 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Real-Time Clocks
DS1685EN-5_12 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3V/5V Real-Time Clocks
DS1685EN-5+ 功能描述:实时时钟 3V/5V RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1685EN-5+T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 242BYTE 24TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC 5V 64BIT Y2KC IND 24TSSOP
DS1685EN-5+T&R 功能描述:实时时钟 3V/5V RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1685EN-5+TR 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Real-Time Clocks
DS1685N-3 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock
DS1685N-5 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock